A cellphone app secretly turns 16 of its users into real Magical Girls, each with a unique power. Their job is to help people to earn candies, though normal people will only be able to retain partial memories of them. Soon they're informed there's too many magical girls, they must compete for spots until only 8 remain. This escalates to a deadly battle royal. Factions form, new elements arise, surprising details about the girls' real lives are shown, and the truth behind the app slowly unravels. (Summary by War Machine)